the role of plants in carbon cycle
Explanation:
the amount of CO2 found in the atmosphere varies over the course of a year. much of this variation happens because of the role of plants in carbon cycle...respiration occurs all the time, but domains during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.
Answer:
When a cell has energy available, it can store small amounts of it by adding phosphate groups to ADP, producing ATP. ADP is like a rechargeable battery that powers the machinery of the cell. One way cells use the energy provided by ATP is to carry out active transport.
Explanation:
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Answer:
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Explanation:
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Answer:
conservative replication model
Explanation:
In their experiment, Meselson and Stahl found that the DNA duplexes present after the first round of replication had intermediate density. This occurred since the semiconservative process of DNA replication of one DNA molecule (having both strands with 15N) forms two DNA duplexes each with one parental strand (15N) and one newly formed strand (14N).
If they had found two duplexes of two different density, this would have supported the conservative replication model. In this case, the DNA replication of the parent DNA molecule would have formed two DNA duplexes. One DNA molecule would have both the parental DNA strands with 15N while the other DNA duplex would have both newly formed strands with 14N.
Answer:
The answers are:
- Type 2 (fast twitch) muscle fibers - type A: b. muscle fibers that help with a long sprint or carry a heavy object a short distance
- muscular strength: d. the muscle's capacity to exert force against resistance
- Type 1 (slow twitch) muscle fibers: a. muscle fibers responsible for endurance
- Muscle endurance: c. refers to the ability to perform a specific muscular action for a prolonged amount of time.
- Type 2 (fast twitch) muscle fibers - type B: e. muscle fibers used in short explosive movements such as jumping or lifting a very heavy weight one or two times.
Explanation:
Types of Skeletal Muscles:
Skeletal muscle are divided into two types:
- Slow Twitch (Type 1)
- Fast Twitch (Type 2)
- Slow twitch muscles are the first ones to contract at times of exercise of strenuous physical activity. A compared to fast twitch muscle fibers, they contract slowly but can sustain contraction for a long time.
- Fast twitch muscle fibers are divided into two subtypes: Type 2A and Type 2B.
- Type 2A muscle fibers produce a high amount of force but they fatigue rapidly.
- Type 2B muscle fibers, fire last, produce the most amount of force but wear out very rapidly.
Muscle Characteristics:
- Muscle endurance is the muscle's ability to contract with force against a resistance for a prolonged time period.
- Muscle strength is a measure of the amount of force a muscle can produce against resistance.
