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True [87]
3 years ago
10

What is the sa node of the heart

Biology
1 answer:
olasank [31]3 years ago
5 0

Its a cluster of cells that are situated in the upper part of the wall of the right atrium.

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Which gas is used by humans in the process of cellular respiration?
OLga [1]

Answer:

oxygen

Explanation:

cells use to produce energy during cellular respiration

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Which immune cells directly mediate the apoptosis of the kidney cells and therefore the rejection of the kidney itself
leonid [27]

Answer:

Killer T Cells (Cytotoxic T cells)

Explanation:

Cytotoxic T Cells are the immune cells that directly mediate the apoptosis of kidney cells.

7 0
2 years ago
A particular diploid plant species has 48 chromosomes, or two sets. A mutationoccurs and gametes with 48 chromosomes are produce
PilotLPTM [1.2K]

Answer:

The zygote will have 96 chromosomes.

Explanation:

If self-fertilization occurs, and two gametes (each having 48 chromosomes) unite, the zygote will have 96 chromosomes ( or 4 sets)

6 0
3 years ago
What would occur if you forgot to add dntps to your pcr sample?
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No reaction would occur. because in PCR ,dNTP is crucial factor for polymerisation of primer . DAN polymerase bind to primer and template 
3 0
3 years ago
Meiosis results in _____.
lesantik [10]

Meiosis results in 4 haploid cells.

Explanation:

Meiosis undergoes two cycles namely: meiosis 1 and meiosis 2

Meiosis occurs in germ or sex cells in which four haploid daughter cells are formed each having one of a chromosome pair that exists in diploid cells.

7 0
3 years ago
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