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Delicious77 [7]
3 years ago
13

Which of the following is a main difference when comparing an animal cell and a plant cell?

Biology
2 answers:
sp2606 [1]3 years ago
8 0
The main difference between the two is that plant cells have a cell wall and animal cells do not.
34kurt3 years ago
4 0

Answer:

Either the Chloroplasts or the cell wall

Explanation:

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Please help me with this homework question!
irga5000 [103]

Answer:

Tt and tt

Explanation:

To solve this just work backwards. The first box has Tt so one parent has to have T and the other t. Since the tall plant is on the top, it is T_ and t_. Next use the second box (tt). They are both t so the final answer is Tt x tt.

8 0
3 years ago
1. Psychologists have used four perspectives in their efforts to explain motivation. These include an emphasis on instincts, opt
ololo11 [35]

Answer:

A) drive reduction

Explanation:

Motivation is the urge that fuels and directs human with the energy to accomplish a given task. Motivational theory is accustomed  with the role of  searching for what drives individuals to work towards a goal or a task.

The drive reduction theory explains  physiological ideology  required bring out  an aroused tension state that motivates an organism to satisfy the need.

Instincts Theory reflects innate and  fixed pattern of complex behavior in animals. For example, making holes of crabs for safety.  

Optimum Arousal Theory drive people to engage in certain activities in the quest to keep up with an optimum level of physiological arousal.

Hierarchy of motives: According to Maslow's pyramid, hierarchy of motives is explained based on need to satiate or quench the least physiological needs in order to be active before subsequent level needs.

4 0
3 years ago
Differentiate Humoral immunity vs cell mediated immunity
trapecia [35]

Answer:

Cell-mediated immunity develops through a network of interactions that results in defense against microorganisms that survive within phagocytes or other cells. The response is initiated by the recognition of intracellular microorganism antigen by T cells through the histocompatibility complex. In the CD8 response, only the target cell carrying the class I associated antigen can be lysed or induced to apoptosis. In another mechanism of the cellular response, CD4 + Th1 T cells activate, for example, cytokine-infected macrophages such as IFN. When a pathogen resists the effects of activated macrophages, chronic infection may develop.

The hormonal immunity response leads to the destruction of extracellular microorganisms and prevents or decreases the spread of intracellular cells by neutralizing, opsonizing and activating the complement system.

4 0
3 years ago
ASAP PLEASE A feature in the early hominid was her apelike shoulders and forelimbs but a pelvis that indicated most of her body
Katyanochek1 [597]
The best explanation for the the early hominid that indicated most of her body weight was above her pelvis is that her apelike structures indicates she could use tools like a chimpanzee. Scientists call her the Handy Human. The correct answer is C. 

4 0
3 years ago
Read 2 more answers
What does diffusion do in the respiratory system and circulatory system
GenaCL600 [577]

Answer:

Diffusion in the Lungs trades out Carbon Dioxide (CO2) for Oxygen (O2) In the Circulatory system it trades Oxygen (O2) for Carbon Dioxide (CO2)

Explanation:

As you breathe the Lungs take in air, as they do that the air travels to the bronchi, from there it goes through a process where the veins which have carried de-oxygenated blood to be diffused and reloaded with Oxygen and trade off their CO2. Then the blood flows through arteries and delivers the needed O2 to cells throughout the body and the cycle repeats.

6 0
3 years ago
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